Why This 91-Year-Old Is Hiking 2,190 Miles. Again.

Dale Sanders, known as Grey Beard, is setting out to reclaim his record as the oldest person to hike the entire Appalachian Trail. He has 12 months to complete the roughly 2,190-mile trail for it to count as a thru-hike record – and is on track to finish in time. Subscribe: http://bit.ly/U8Ys7n More from The New York Times Video: http://nytimes.com/video ---------- Whether it's reporting on conflicts abroad and political divisions at home, or covering the latest style trends and scientific developments, New York Times video journalists provide a revealing and unforgettable view of the world. It's all the news that's fit to watch.